Ok so last patch they changed Doran's Ring as part of the mana rework for mages. The change was decent, I particularly like the bonus damage to minions since ap champs have some of the worst auto attacks in the game (slowest + weakest). However, I feel they missed a great opportunity here. I thought the mana refund on minion kill was a great mechanic IF it only worked for last hits made with auto attacks. This would still alleviate the problem of mages getting refunded 30 some mana for clearing a wave with a spell, and coupled with the new bonus damage to minions and the general mana nerfs, would foster more decisive use of spells in lane while not forcing the mage to back early for a mana item.
Let me know what you think.